Representation and classification of steel, steel, and steel pipe materials

An overview of the representation of steel numbers in China

The steel grade is referred to as the steel number, which is the name given to each specific steel product and is a common language for people to understand steel. China's number table

The method of display, according to the national standard "steel product brand representation method" (GB221-79), the use of Chinese pinyin letters, chemical symbols

The combination of the number and the Arabic numerals is indicated by the method. which is:

The chemical elements in the No. 1 steel are represented by international chemical symbols, such as Si, Mn, Cr, etc. Mixed rare earth elements with "RE" (or "Xt"

) said.

2 Product name, use, smelting and pouring methods, etc., generally expressed in abbreviated letters of Chinese Pinyin, see table.

The content of major chemical elements (%) in steel 3 is expressed in Arabic numerals.